Despite Aerosmith’s denials, Steven Tyler has called it quits with fiancée, Erin Brady

According to multiple news sources, 64-year-old rock star Steven Tyler has called it quits with former fiancée, Erin Brady. The Aerosmith front man insistence on staying sober has been reported as the cause of the split.

The singer, who’s long battled drug and alcohol problems, has been in rehab eight times, including once with 38-year-old, Brady.

The band’s publicist vehemently denies the Post report, sending us this statement: “Just as any couple goes through trials and tribulations in a relationship, Steven and Erin are asking for their privacy at this time. They are engaged to be married and each is committed to their sobriety. Any claim to the contrary is absolutely false and misleading.”

Monday, Aerosmith is scheduled to be in Boston to play a noontime show at an undisclosed location – a Rolling Stones-worthy PR stunt intended to hype the band’s new CD, “Music From Another Dimension!,” which comes out Tuesday. (The performance also precedes the next leg of the band’s “Global Warming Tour,” which heated up TD Garden in July.)

Tyler and Brady, a former Live Nation tour accountant, have been together for several years and got engaged, somewhat unexpectedly, last winter during a trip to Hawaii. (TMZ reported at the time that Tyler’s kids — Liv, Mia,Chelsea, and Taj — were not pleased.) Brady made headlines a few years ago when she and a female Aerosmith fan got into a brawl at the Pangaea nightclub in Hollywood, Fla.

Tyler has been married twice before — to David Johansen’s ex-wife Cyrinda Foxe in 1978 and, 10 years later, to Teresa Barrick. In his recent memoir, “Does the Noise in My Head Bother You?” Tyler described Brady as a “tough chick” and also revealed that the two were in rehab together at California’s Las Encinas Hospital in 2007.

Contrary to what the band’s publicist has announced, “Steven has quietly ended it with his fiancee,” alleges a source. “Steven has been trying to maintain his lifestyle and to stay clean. The tour is really important to him and the band. So he decided to end it.”

In January, Tyler described the moment he fell for Brady, a onetime tour accountant for Aerosmith.

“She had on this hair band on around her head,” he told Ellen DeGeneres. “She looked really old-fashioned, so I took her back in the room and she tied me up with it, and I thought, ‘I’m marrying this girl.'”

But for all his romantic musings, not to mention the five-carat sparkler he slipped on Brady’s finger, Tyler remained pragmatic.

“All those divorces I had, I hurt those girls deeply,— he admitted to Oprah Winfrey. “I don’t want to hurt anyone again.